Not a crazy idea at all. Our descendant AI probes as they explore other star systems will probably also gravitate to just such ringed worlds, and we already know that most of the exoplanets found so far are superjovians. So if we might do it, why not an exploring ETI?

As you may know, Arthur C. Clarke picked the Saturn system in the novel version of 2001: A Space Odyssey as the place of the giant monolith. They used Jupiter in the film because they couldn't do the ring special effects right at the time. Douglas Trumbul made Silent Running in 1971 in part because he wanted to show he could make Saturn and its rings look realistic in FX.

In the 2001 novel, the dark and light hemispheres of the moon Iapetus were used as a beacon to attract the Discovery crew to the Stargate Monolith. Though Voyager 2 certainly got better images of that moon than it did at Phoebe in 1981, I look forward to seeing what Cassini can show us.

Just as with electromagentic waves where we may first learn of ETI through their leakage rather than a direct signal to us, we may find the remains of excavation trenches, discarded equipment, maybe even their trash among the moons and rings of Saturn. Or how about the comet and/or planetoid belts? The Apollo astronauts certainly left a lot behind on Earth's moon, and exploring ETI may do something similar. I just don't think every species has a Prime Directive concern about lower races, nor is it healthy for us as a society to remain in a cosmic wildlife preserve.